Pyotr Alexeyevich Kropotkin (December 9, 1842 – February 8, 1921) was a Russian evolutionary theorist, philosopher, economist, geographer, author and one of the world's foremost anarcho-communists. He was a proponent of a decentralised communist society free from central government and based on voluntary associations of self-governing communities and worker-run enterprises. He became friends with a number of prominent English-speaking socialists, including William Morris and George Bernard Shaw.